1.77% is the change from 620 to 631
Calculation steps:
[( 631 - 620 ) ÷ 620] x 100 = 1.77%
Formula
Percentage change = [(631 - 620) / 620] x 100
Subtract the new number by the original number
631 - 620 = 11
11 ÷ 620 = 0.017741935483870968
0.017741935483870968 x 100 = 1.77%